Patent US3025146A successfully refreshed from Google Patents.
US3025146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of growing shaped crystals
Assignee: Texas Instruments Inc
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Filing: 1958-04-23
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Granted: 1962-03-13
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Expires: 1978-04-23
Abstract
No abstract record available.
Inventors
- 👤 Walter R Runyan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:21
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/36; C30B29/00; C30B29/60; Y; Y10; Y10S; Y10S117/00; Y10S117/90; Y10S117/901; Y10S117/902; Y10S117/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE METHOD OF GROWING A SHAPED SINGLE CRYSTAL OF SEMICONDUCTOR MATERIAL WHICH COMPRISES MELTING A MASS OF SEMICONDUCTOR MATERIAL, INTRODUCING INTO THE MELTED MATERIAL A SINGLE CRYSTAL SEED PORTION HAVING A SHAPED PLUG PORTION ATTACHED THERETO, SURFACE OF SAID PLUG PORTION BEING SUBSTANTIALLY INERT TO SAID SEMICONDUCTOR MA TERIAL, WITHDRAWING THE SINGLE CRYSTAL SEED PORTION AND ATTACHED PLUG PORTION FROM THE MELTED MATERIAL TO CAUSE THE MELTED MATERIAL TO CRYSTALLIZE ONTO THE SINGLE CRYSTAL SEED PORTION AND AROUND THE PLUG PORTION TO PRODUCE A SINGLE CRYSTAL OF SAID MATERIAL HAVING A SHAPE COMPLEMENTARY TO THAT OF SAID PLUG PORTIO, AND REMOVING SAID PLUG PORTION FROM SAID GROWN SINGLE CRYSTAL.
Claim 2
Independent Claim
109 words
THE METHOD OF GROWING A SHAPED SINGLE CRYSTAL OF SEMICONDUCTOR MATERIAL WHICH COMPRISES MELTING A MASS OF SEMICONDUCTOR MATERIAL, INTRODUCING INTO THE MELTED MATERIAL A SINGLE CRYSTAL SEED PORTION HAVING A SHAPED PLUG PORTION ATTACHED THERETO, SURFACE OF SAID PLUG PORTION BEING SUBSTANTIALLY INERT TO SAID SEMICONDUCTOR MA TERIAL, WITHDRAWING THE SINGLE CRYSTAL SEED PORTION AND ATTACHED PLUG PORTION FROM THE MELTED MATERIAL TO CAUSE THE MELTED MATERIAL TO CRYSTALLIZE ONTO THE SINGLE CRYSTAL SEED PORTION AND AROUND THE PLUG PORTION TO PRODUCE A SINGLE CRYSTAL OF SAID MATERIAL HAVING A SHAPE COMPLEMENTARY TO THAT OF SAID PLUG PORTIO, AND REMOVING SAID PLUG PORTION FROM SAID GROWN SINGLE CRYSTAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |